128862321853 has 8 divisors (see below), whose sum is σ = 129112889400. Its totient is φ = 128611949568.

The previous prime is 128862321787. The next prime is 128862321857. The reversal of 128862321853 is 358123268821.

It can be written as a sum of positive squares in 4 ways, for example, as 11157063129 + 117705258724 = 105627^2 + 343082^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128862321853 - 2²⁹ = 128325450941 is a prime.

It is a super-2 number, since 2×128862321853² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128862321797 and 128862321806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128862321857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308813 + ... + 1403821.

It is an arithmetic number, because the mean of its divisors is an integer number (16139111175).

Almost surely, 2^128862321853 is an apocalyptic number.

It is an amenable number.

128862321853 is a deficient number, since it is larger than the sum of its proper divisors (250567547).

128862321853 is an equidigital number, since it uses as much as digits as its factorization.

128862321853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97631.

The product of its digits is 1105920, while the sum is 49.

The spelling of 128862321853 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, three hundred twenty-one thousand, eight hundred fifty-three".